Date: Thu, 4 Aug 2022 13:12:48 -0400 From: mike tancsa <mike@sentex.net> To: Jim King <jim@jimking.net>, stable@freebsd.org Subject: Re: igc problems with heavy traffic Message-ID: <59b9cec0-d8c2-ce72-b5e9-99d1a1e807f8@sentex.net> In-Reply-To: <fc256428-3ff1-68ba-cfcc-a00ca427e85b@jimking.net> References: <fc256428-3ff1-68ba-cfcc-a00ca427e85b@jimking.net>
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On 7/31/2022 11:41 PM, Jim King wrote: > I'm trying to use a Qnap dual port 2.5Gb NIC with FreeBSD 13.1. > FreeBSD recognizes the NIC and I'm able to connect to my LAN at 1Gb. > However, trying to push heavy traffic through the NIC results in a > temporary loss of connectivity: traffic stops and the message "igc0: > link state changed to DOWN" appears in the system log. About 10 > seconds later the message "igc0: link state changed to UP" is logged, > followed by some messages from dhclient indicating that it has > acquired a lease. At that point network connectivity works normally, > until I try to push a lot of traffic again. I've been able to trigger > this every time using iperf3 from another PC on my LAN, and by using > Ookla's speedtest client (my Internet service is good for about 900 > Mbps). > How long does it take to wedge the nic ? I have a pair of Topton routers (4 IGC NICs) back to back and a simple iperf3 test seems to work ok between the 2 units. iperf3 -c 10.1.255.168 Connecting to host 10.1.255.168, port 5201 [ 5] local 10.1.255.209 port 55168 connected to 10.1.255.168 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 282 MBytes 2.36 Gbits/sec 0 1.07 MBytes [ 5] 1.00-2.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 2.00-3.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 3.00-4.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 4.00-5.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 5.00-6.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 6.00-7.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 7.00-8.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 8.00-9.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes [ 5] 9.00-10.00 sec 281 MBytes 2.35 Gbits/sec 0 1.07 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec receiver iperf Done. Doing iperf3 -R -P4 -c 10.1.255.168 seems to work as well - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 936 MBytes 785 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 935 MBytes 785 Mbits/sec receiver [ 7] 0.00-10.00 sec 658 MBytes 552 Mbits/sec 0 sender [ 7] 0.00-10.00 sec 658 MBytes 552 Mbits/sec receiver [ 9] 0.00-10.00 sec 936 MBytes 785 Mbits/sec 0 sender [ 9] 0.00-10.00 sec 935 MBytes 785 Mbits/sec receiver [ 11] 0.00-10.00 sec 278 MBytes 233 Mbits/sec 0 sender [ 11] 0.00-10.00 sec 278 MBytes 233 Mbits/sec receiver [SUM] 0.00-10.00 sec 2.74 GBytes 2.36 Gbits/sec 0 sender [SUM] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec receiver Similarly, just doing perf3 -t60 -c 10.1.255.168 seems to work ok too - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.06 sec 16.0 GBytes 2.29 Gbits/sec 4 sender [ 5] 0.00-61.60 sec 16.0 GBytes 2.23 Gbits/sec receiver ---Mike
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